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Posted to issues@hbase.apache.org by "Ted Yu (Issue Comment Edited) (JIRA)" <ji...@apache.org> on 2011/11/23 06:26:40 UTC

[jira] [Issue Comment Edited] (HBASE-4797) [availability] Skip recovered.edits files with edits we know older than what region currently has

    [ https://issues.apache.org/jira/browse/HBASE-4797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155690#comment-13155690 ] 

Ted Yu edited comment on HBASE-4797 at 11/23/11 5:26 AM:
---------------------------------------------------------

Integrated to TRUNK.

Thanks for the patch Jimmy.

Thanks for the review, Lars and Stack.
                
      was (Author: yuzhihong@gmail.com):
    I will.
                  
> [availability] Skip recovered.edits files with edits we know older than what region currently has
> -------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4797
>                 URL: https://issues.apache.org/jira/browse/HBASE-4797
>             Project: HBase
>          Issue Type: Bug
>          Components: performance
>            Reporter: stack
>            Assignee: Jimmy Xiang
>            Priority: Critical
>              Labels: noob
>             Fix For: 0.94.0
>
>         Attachments: 0001-HBASE-4797-[availability]-skip-older-edits.patch, 0001-HBASE-4797-[availability]-skip-older-edits.patch, 0001-HBASE-4797-availability-skip-files-with-edits-we-kno.patch, 0001-HBASE-4797-availability-skip-files-with-edits-we-kno.patch
>
>
> Testing 0.92, I crashed all servers out.  Another bug makes it so WALs are not getting cleaned so I had 7000 regions to replay.  The distributed split code did a nice job and cluster came back but interesting is that some hot regions ended up having loads of recovered.edits files -- tens if not hundreds -- to replay against the region (can we bulk load recovered.edits instead of replaying them?).  Each recovered.edits file is taking about a second to process (though only about 30 odd edits per file it seems).  The region is unavailable during this time.

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